Put it as the final beat of a short edit, after the setup clip has made the bad idea clear. Open with the Bruh sound for disbelief, then let this clip close the exchange, and follow it only with Emotional Damage if the target needs one last sting.
关于此声音
This is a five-second spoken line in Portuguese, 'primeiramente, foda-se,' delivered in a flat, matter-of-fact voice with no build-up. It feels abrupt and deliberately rude, like shutting a conversation down in a single breath, and the bluntness is what makes it funny rather than aggressive. Portuguese speakers recognise it instantly as a shorthand refusal.